<!DOCTYPE html>
<html lang="zh-cn">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>task08</title>
    <link rel="stylesheet" href="./css/index.css">
</head>

<body>
    <div class="grid-container">
        <div class="row">
            <div class="col-md-4 col-sm-6">
                <div class="inner"></div>
            </div>
            <div class="col-md-4 col-sm-6">
                <div class="inner"></div>
            </div>
            <div class="col-md-4 col-sm-12">
                <div class="inner"></div>
            </div>
        </div>
        <div class="row">
            <div class="col-md-3 col-sm-3">
                <div class="inner"></div>
            </div>
            <div class="col-md-6 col-sm-6">
                <div class="inner"></div>
            </div>
            <div class="col-md-3 col-sm-3">
                <div class="inner"></div>
            </div>
        </div>
        <div class="row">
            <div class="col-md-1 col-sm-2">
                <div class="inner"></div>
            </div>
            <div class="col-md-1 col-sm-2">
                <div class="inner"></div>
            </div>
            <div class="col-md-2 col-sm-8">
                <div class="inner"></div>
            </div>
            <div class="col-md-2 col-sm-3">
                <div class="inner"></div>
            </div>
            <div class="col-md-6 col-sm-3">
                <div class="inner"></div>
            </div>
        </div>
    </div>
</body>

</html>